Reversing-gear mechanism.



No. 647,472. Patented Apr. l7, I900.

E. BRUCKSCH.

REVEBSING GEAR MECHAM SM.

(Application filed Aug. 22, 1899.1 (No Model.) 3 $heets-$heet l.

I ZBMM.

THE scams vrrzas so" Pam-mum" wAsHmo'mu. u. c.

No. 647,472. Patented Apr. l7, I900.

E. BRUCKS CH. REVERSING GEAR MECHANISM.

(Application filed Aug. 22, 1899.) (No-Model.) 3 Sheets-Sheet 2.

-1111? 2:11.11.-- c 0 e a 1. I \I 17-."23 I I J: .111 n /m m g 4;; I I ICMMXQM THE "cums versus co. wuo'ruuwa. vusmuuron. uv c.

No. 647,472. Pate nted Apr. l7, I900.

E BRUCKSCH. BEVERSING GEARMEGHANISM.

(Application filed Aug. 22. 1809.) (No Model.) 3 Sheets-Sheet 3.

THE NORRvs PETERS ca, PNOTQUTHO" wAsnmoTorv, n. cy

UNITED STATES PATENT OFFICE.

EMIL BRUC KSOH, OF SCI-IilNBRUNN, GERMANY.

REVERSlNG-GEAR MECHANISM.

SPECIFICATION forming part of Letters Patent No. 647,472, dated April 17, 1900. Ap lication filed August 22, 1899. erial No. 728,052. (No model.)

To atZZ whom it may concern:

Be it known that I, EMIL BRUCKSCH, mineowner, a subject of the GermanEmperor, and a resident of Schonbrunn, near Goerli tz, Silesia, Germany, have invented certain new and useful Improvements in Reversing Gear Mechanisms, of which the followingis a specification.

This invention relates to a safety arrangement for the reversing-gear of hoisting-ma chines, &c., which prevents the machine from being run in the same. direction twice, excepting when desired.

In the accompanying drawings, Figure l is a cross-section of the apparatus. Figs. 2 to 5 are plans, partly in section, showing the parts in different positions.

The reversing-lever a is adapted to be engaged by a catch p and is provided with two laterally-projecting pins 0 n. The frame a, that constitutes'a guide for the lever a, is provided with a lateral extension a that contains two movable tubular socketsb 0. These sockets contain bolts 01 e, influenced by springs f. Pins 9 h on sockets b cengage radial slots of a pivoted rotatable cap-plate or disk 1', having projections Z-m and ahandle 7c,

The operation is as follows: The lever a, being in the position indicated in Fig. 2, can be set to the right, (ahead,) but not to the left (back) It cannot be set to the left, as the socket b and bolt cl are in the path of the lever. It can be set to the right, because the projections Z m, which are in the path of pins n 0, will be pushed aside by said pins, so that the disk z'is partly rotated until the pins have cleared the projections- When the lever has arrived in the position Fig. 3, the end of bolt 61 by impinging against frame a, and thus compressing spring f, will rotate the disk 2' slightly backward, so that the projections I m are again brought within the paths of the pins 0 n, and the projections will be reengaged by the pins upon the next stroke of the lever. By reversing the steering-lever the pins 0 n will now rotate the disk by engaging the projections m l, Fig. 4, until the projections have been pushed out of the paths of the pins, and the lever may be brought from the position Fig. 4 into the position Fig. 5. It cannot be brought from position Fig. 4. di-

rectly back into the position Fig. 3, because the socket c and bolt e will now be in its way. When the lever has arrived in the back posit-ion, Fig. 5, the spring of bolt 6 will be compressed, so that the projections Z on are again set into the paths of the lever-pins. Thus it will be seen that the lever may be moved from one terminal position directly into the second terminal position, but never back into its first position without having previously arrived at its second position. Thus the hoisting-machine must be alter nately steered forward and backward,and any misplacing of the reversing-lever is avoided.

If the machine is to be run twice in the same direction, the disk 2' is turned by hand by means of the handle 70.

The lever may remain in either one of its end positions, or it may be brought after each operation back to its normal-z'. 6., intermediate or dead -position. Thus the lever is allowed to remain in either of its end positions if the machine is to be run forward or backward, and it is brought to the normal position if the throttle is to be opened and a sudden start is to be prevented. It is not possible to bring the lever from either of its end positions to the normal position and then directly back to its original end position. If this is to be done, the disk must be turned by hand; but it is possible to throw the lever from, say, its left-hand end position into the normal position and then later directly to its right-hand end position, and vice versa. So,

also, the lever may be thrown directly from one end position into the other end position.

What I claim is A safety attachment for reversing-gear, consisting of a lever having a pair of pins, a rotatable disk having a pair of projections, sliding sockets engaging said disk, and springbolts within the sockets, substantially as specified.

Signed by me at Zittau, Germany, this 3d day of August, 1899.

EMIL BRUOKSCH. 

